baber/WOPTO huggingface dataset:
Patent GB-1130150-A (GB)
Title: An electromechanical oscillator comprising a tuning fork with frequency adjustment
Inventor: CLIFFORD CECIL FRANK
IPC: H02K33/06
Filed: 1966-07-04
Abstract: 1,130,150. Electric clocks. HORSTMANN CLIFFORD MAGNETICS Ltd. June 16, 1967 [July 4, 1966], No.29906/66. Heading G3T. [Also in Division H2] An electromagnetic oscillator, particularly for the control of an electric clock, comprises a tuning fork having a coil associated with each time thereof for connection to an amplifier by which oscillation of the tuning fork is maintained, at least one magnet associated with the tuning fork end coils to establish the main magnetic field associated with each coil by which the amplifier input and the tuning fork drive signals are provided, and a movable magnetic element 19 associated with at least on coil 17 and tine 12 and which attracts the tine 12 to modify its restoring force and thereby reduce its natural frequency of oscillation, the arrangement being such that the magnetic flux passing between the magnetic element 19 and the tine 12 is mainly leakage flux 31 and the magnetic element 19 diverts none or only a small proportion of the main flux 30 linking with the coil 17. The magnetic element 19 may comprise a soft iron disc secured eccentrically to a spindle 21 rotatable by a knurled wheel 22 to vary the magnetic flux passing through the element 19, thereby varying the frequency of oscillation of the tuning fork. In a further embodiment a soft iron disc is rotatable between magnets carried by the two tines of the fork. In another construction a soft iron disc is rotatable eccentrically adjacent a magnetic bar carried by a tine of the tuning fork and co-operating with a wavy magnetic track on an escape wheel to drive the latter in the manner described in Specification 1,128,394. In other embodiments a permanent magnet is used in place of the soft iron disc, in which case the flux of such permanent magnet may replace the leakage flux 31.
Patent GB-203573-A (GB)
Title: Improvements relating to trousers stretchers
IPC: A47G25/68
Filed: 1922-11-02
Abstract: 203,573. Timings, S. Nov. 2, 1922. Trouser stretchers of the kind having a main member 4, which may take the form of a press, with a pivotally mounted clamp 1 at one end, are provided with a bar or member such as 6 slidably mounted on the clamp and adapted to engage between the clamp and the main member to retain the clamp in stretching position. As shown, the bar is provided with hooklike portions 8 which engage over the edge of the member 4 and retain the clamp in a convenient position when inserting the trousers into the stretcher.
Patent GB-382072-A (GB)
Title: Improvements in display devices
IPC: G09F13/00
Filed: 1931-10-29
Abstract: 382,072. Changing displays. HARRISON, W. P. and HARRISON PATENT KNITTING MACHINE CO., Ltd., 48, Upper Brook Street, Manchester. Oct. 29, 1931, No. 29946. [Class 3 (i).] In colour display apparatus in which a beam of light is passed in succession through colour filters in an intermittently rotated disc to illuminate a distant object, the disc G is rotated by a motor A through worm reduction gear B, a shaft c, and Geneva stop motion C, D. The lamp is enclosed in a housing K and the disc G in a casing H.
Patent GB-395554-A (GB)
Title: Improvements in and relating to mechanism for feeding cigars to a cigar enveloping or banding machine
IPC: A24D1/16
Filed: 1932-10-26
Abstract: 395,554. Feeding cigars. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.- (International Cigar Machinery Co. ; 5520, 2nd Avenue, Brooklyn, New York, U.S.A.) Oct. 26, 1932, No. 29958. [Class 117.] Cigars are delivered by layers from the bottom of a magazine to an enveloping or banding machine. The cigars C are placed in layers, shown end on in Fig. 1, into a magazine formed by walls 21, 23 and rest upon a feed table 15 having grooves in which run conveyer chains 32 with pusher members 33. Camoperated arms 55<1>, 56<1> are adapted to actuate arms 62<1>, 63<1> to move plates 63, 63 to assume the successive position shown in Fig. 1, 7 .. 10 respectively. In the position shown in Fig. 1, the plate 63 is further from one end of the cigar than the plate 62 is from the other, the plate 62 now advances and pushes the lowermost layer C<1> into the positions shown in Fig. 7. After the plate 62 has risen, as shown in Fig. 8, to lift the superincumbent cigars slightly, the plate 63 pushes the layer C<1> to the left, Fig. 9, and also rises, leaving the layer free, as shown in Fig. 10, to be fed away by the conveyer 32. Guide bars 70 are lifted by the plates to assist the action. After the layer C<1> has been removed. the plates 62, 63 descend together to deposit the next layer on the table 15 and withdraw to the positions shown in Fig. 1 in readiness for the next cycle of operations. The separated layer is delivered between belts running faster than the conveyer chains so as to separate the individual cigars and accumulate them again at the delivery point to form a store.
Patent GB-679974-A (GB)
Title: Method and apparatus for the reproduction of an image or coating by precipitation ofmaterial in an electrostatic field
IPC: H01J9/22
Filed: 1949-11-23
Abstract: 679,974. Electrostatic precipitation. HUEBNER, W. C. Nov. 23, 1949, No. 30007/49. [A Specification was laid open to inspection under Sect. 91 of the Acts, Aug. 8, 1950.] Class 39 (i). [Also in Group XVI] An image is reproduced on a sheet by depositing material from a smoke atmosphere, derived from products of combustion, in an electrostatic field having the configuration of the image to be reproduced. As shown, Fig. 1, sheet or web material M upon which the image is to be reproduced, is threaded between a housing 27 and a cylinder 19 having electrically conductive image areas and insulating non- image areas. The electrostatic field is established between the electrodes 24, 28. The smoke is generated by the combustion of material 39 in a carbon arc 36, 37. It is introduced through a nozzle 47, where it may be mixed with gas supplied through a valve 49, into the housing 27 where it is circulated by a number of separately controlled fans 51. Adjustable shutters 68, 69 are provided in front of the cylinder 19. Evacuated troughs 57, 58 prevent leakage of smoke. The smoke may be precharged by electrode 77. The material M is dried at 15, and precharged by electrode 76. Devices 16, 17, 21, 22 for removing static electricity are provided. Several smoke generating chambers may be provided; a different coloured smoke may be generated in each chamber. In another embodiment, Fig. 5, the housing 80 is adjustable with respect to the cylinder 19. The housing 80 comprises two longitudinal ducts 81, 101 forming a closed circulating path for the smoke. Specification 618,512, [Group XVI], is referred to.
Patent GB-1187976-A (GB)
Title: Improvements in the Manufacture of Recesses of Rectangular Cross-Section Using an Abrasive Jet.
Inventor: AYRES SIDNEY DENNIS
IPC: B24C1/04
Filed: 1966-07-04
Abstract: 1,187,976. Cutting by blasting. PLESSEY B.T.R. Ltd. 28 July, 1967 [4 July, 1966], No. 30015/66. Heading B3D. A method of cutting a recess of substantially rectangular cross-section in a block of material having a top layer and a backing layer formed from a material which is more resistant to abrasion than the material of the top layer comprises the steps of (i) covering the surface of the block opposite to the backing layer with a mask of elastomeric material having an aperture shaped in accordance with the required plan of the recess, and (ii) cutting through the top layer to the backing layer around the periphery of the required recess using an abrasive jet. In making a fluidic element, either in a form ready for use or to serve as a mould from which elements of a different material can be produced in quantity, a block 2 has a top layer 8, the thickness of which is equal to the desired depth of the recess and of a material suitable for erosion by an abrasive jet, and a lower layer 9 of a material resistant to an abrasive jet and to etching fluid. A mask 3 of elastomeric material is used and the tool is mounted on an engraving, contour milling or similar machine, so that the jet 4 produces a channel 5 defining the edges of the openings. The channel, which extends completely through the top layer 8 is filled with a resist and the material 6, 7 removed to the same depth by etching. The mask may be applied by a printing process.
Patent GB-159616-A (GB)
Title: Improvements in or relating to apparatus for re-magnetising magnetos
IPC: H01F13/00
Filed: 1919-12-03
Abstract: 159,616. Wood, S., Hague, J., and Hague, T.. Dec. 3, 1919. Electromagnets. - Apparatus for re-magnetizing magnetos in which the magnets are arranged radially comprises electromagnets formed with a gap in the pole-pieces to permit contact with the adjacent arms of the magnets. Fig. 4. shows a carrier g having electromagnets b and pole-pieces a<1> formed with a transverse gap e adapted to receive the magnet arms f. The carrier may also be formed as a segmental rim i shown in Figs. 6 and 9 having pole-pieces j reduced in thickness at j<1> and having slots k formed therein to pass around the distance-pieces l. The pole-pieces may be modified as shown in Fig. 10, and may be provided with wedge-shaped insulating-blocks q to force the poles into engagement with the magnets.
Patent GB-262920-A (GB)
Title: Improvements in and connected with pumps
IPC: F04D15/00
Filed: 1925-11-30
Abstract: 262,920. Walker, J. R. Nov. 30, 1925. Regulating or controlling.-The discharge pressure of a centrifugal pump 1 is maintained constant or regulated at will by the introduction of a small quantity of fluid under high pressure into the inlet of the pump. The nozzle 5 of a manually adjusted needle valve 6 is so disposed that the jet from it exercises an injector action on, the water in the suction main 3, thereby increasing its pressure and the pressure on the delivery side. The casing 8 contains a piston valve 7 urged into open position by a spring 9; the piston has a head 10 beneath which are ports 10<1> communicating with a conduit through the stem. A pipe 13 connects the pump discharge 4 and the casing 8. With the valve 7 at its maximum opening as shown and the needle valve 6 withdrawn to its limit, the maximum flow occurs from the pressure side 4 of the pump to the nozzle 5. An increase, in delivery pressure depresses the piston 7, partially shrouds the ports 10<1> and diminishes the flow to the nozzle 5, thus acting to keep the delivery pressure constant. In a modification the controlling valve 17, Fig. 2, is of the double beat type with branches 15, 16 connected to the delivery and suction sides of the pump. The valve spindle 18 carries at its upper end a piston 21 in a cylinder open at the top to the atmosphere. The pump delivery side is connected to the pipe 24 and the pressure acts against the spring 23.
Patent GB-1285287-A (GB)
Title: Motor control system with control amplifier stage having anti-undershoot circuit
IPC: H02P7/292
Filed: 1970-06-22
Abstract: 1285287 Automatic speed-control BORGWARNER CORP 22 June 1970 [3 July 1969] 30245/70 Heading G3R A reversible series motor is shunted by a free-wheeling diode and is energized through controlled rectifiers having firing circuits which are controlled by an amplifier stage comprising an operational amplifier 80. The latter receives a speed reference signal on line 61 and a signal related to the armature voltage on line 60, while IR compensation signals are transmitted over lines 54 and 70. An output conductor 110 is coupled between the operational amplifier and the power circuit to regulate the controlled rectifiers. A feedback capacitor 85 being connected between the lines 60 and 110. A potentiometer 118 and resistor 120 are connected to negative terminal 121 and provide a first bias potential to the conductor 110 to ensure that the amplifier 80 operates near its saturation level when the reference signal calls for a very low speed. With this arrangement, as an increase speed signal is applied to the amplifier 80, its conduction level is reduced towards zero. Accordingly, speed reduction signals applied to the operational amplifier will not provide excess charge on the feedback capacitor 85 and produce speed undershoot of the system. A potentiometer 122 is associated with resistor 124 and positive terminal 123 to provide a second bias potential to the amplifier 80 which then has a zero output voltage when a zero input signal is applied to both input connections. When an overload condition is detected, an overriding signal on line 59 turns off the transistor-switch 111 and prevents the signals from the operational amplifier being transferred to the firing circuits of the controlled rectifiers.
Patent GB-146776-A (GB)
Title: Improvements in rectal plugs
IPC: A61F5/00
Filed: 1919-12-04
Abstract: 146,776. Kirchhoff, R. Dec. 4, 1919, Rectal appliances.-A short flexible pipe with an enlargement at each end has a valve action provided for at the outer end, so that flatus may be passed, but only when putting an extra pressure on the bowel. The inner enlargement may have a space for holding ointment, and the interior of the plug may contain deodorant or scented material. Fig. 1 shows the plug fitted to receive ointment in the chamber d between the tube c and the enlargement b, which is perforated to allow the ointment to pass into the bowel. The outer enlargement a is perforated at h and closed by a flexible valve i. A twisted wire k wrapped with absorbent thread, which is dipped in deodorant or scented material, is secured to the cover g. Fig. 2 shows a modification, in which the valve takas the form of a ring of rubber m, which covers holes l. In a further modification, the holes are formed in the slope of the enlargement, the shin of the wearer acting as a valve.
Patent GB-458142-A (GB)
Title: Improvements in or relating to platen operating mechanism for typewriting and like machines
IPC: B41J19/80
Filed: 1935-11-04
Abstract: 458,142. Typewriters &c. GARDNER, A. L., 178, Norburv Crescent, Streatham, and RICHARDSON, E. W., 101, Palace Road, Brixton, both in London. Nov. 4, 1935, No. 30401. [Class 100 (iv)] Platen-rotation for blanking.-A platenhandle can be moved from normal or inoperative position, in which it does not interfere with the travel of the carriage, into operative position. The handle h shown in the Figure is pivoted on a pin g arranged in a slot formed in a sleeve c secured to the platen-shaft b, a spring j maintaining the handle in the normal position shown. When it is required to rotate the platen, the handle is moved into a position at right-angles to that shown. The spring may be supplemented by a spring-pressed sleeve mounted on the sleeve c. In an alternative arrangement, the handle can slide radially to the platen-knob.
Patent GB-1010921-A (GB)
Title: Method of and device for synchronizing printing with the size of a paper blank cut from a paper band roll
IPC: B65B41/18
Filed: 1962-08-09
Abstract: 1,010,921. Feeding webs. ZAVODY V.I. LENINA PLZEN, NARODNI PODNIK. Aug. 9, 1962 [Aug. 9, 1961], No. 30470/62. Heading B6B. In an apparatus for synchronizing the printing on blanks with the length of blanks cut from a web of paper or similar material, a web 1 having reference marks 2 is unwound from a roll 3 by feed rollers 5, 6. The web is braked by a brake 8 which stops the feed of the band before cutting by device 12. A photoelectric cell 9 operative only when the web is stopped controls the energization of an electeomagnet 14, Fig. 2 (not shown), which trips feed rollers 5, 6 through cam 21 and follower 20, Fig. 3, when a reference mark 2 stops actually under photoelectric cell 9. The feed rollers 5, 6 normally feed a length in excess of the correct length of blank, i.e. the distance between successive marks 2. Thus, the marks 2 progress towards cell 9 at each stoppage of the web until a mark is in register therewith, thereby energizing electromagnet 14, Fig. 2 (not shown), to arrest the feed by rollers 5, 6 for an interval corresponding to a recess in cam 21, Fig. 3. The next length fed to cutting device 12 by rollers 10, 11 is then' shorter than the correct length. The cell 9 is adjustable with respect to its distance from cutting device 12.
Patent GB-507985-A (GB)
Title: Apparatus for the central introduction of the flushing gas into an annular shaft-like retort
IPC: C10B1/04
Filed: 1938-10-21
Abstract: 507,985. Retorts for destructive distillation. MERKEL, G. Oct. 21, 1938, No. 30541. [Class 55 (i)] Flushing gas is supplied to the annular charge in a retort through a gap 6 formed between the arched base 3 of a closed tube 2 and the mouth 4 of a pipe 5 through which the gas is introduced. The base 3 is of greater diameter than that of the pipe 5, and is vertically adjustable.
Patent GB-1000822-A (GB)
Title: Multistage digital amplifier circuits
Inventor: FRANCKE DIETRICH
IPC: H03K3/2893
Filed: 1961-08-24
Abstract: 1,000,822. Transistor digital amplifiers. INSTITUT FUR REGELUNGSTECHNIK. Aug. 24, 1961, No. 30555/61. Drawings to Specification. Heading H3T. The invention relates to providing a cut-off bias for successive stages of a transistor amplifier for binary digital signals. According to a first aspect (Fig. 1, not shown) the amplifier comprises an emitter follower feeding a common emitter stage, the emitter of latter being biased from the collector supply by means of a potential divider and the arm of the divider connected between the emitter and earth having a tapping point which is connected, preferably through a resistor, to the emitter of the emitter follower to provide bias therefor. According to a second aspect (Fig. 2, not shown) the amplifier comprises three common emitter stages each deriving its bias from a common emitter resistor. The middle stage is a power amplifier and, when conducting, carries a current, equal to the sum of the currents of the other stages, when conducting, so that the bias in the two conditions of the circuit is constant.
Patent GB-1349139-A (GB)
Title: Quinazoline derivatives
IPC: C07D239/94
Filed: 1970-12-02
Abstract: 1349139 Quinazolines SANDOZ Ltd 2 Dec 1970 [5 Dec 1969 26 Aug 1970] 30599/73 Divided out of 1349136 Heading C2C Novel compounds of Formula I (in which each of Y, Y 1  and Y 2  is C 1-3  alkoxy and Q is Cl, Br or WZ, where W is O or S and Z is alkyl, phenyl or benzyl) are prepared by (a) reacting a compound of Formula II with POCl 3  or POBr 3 , and, if desired, reacting the resulting compound (I) in which Q is Cl or Br, with a compound of formula ZOH to produce a compound (I) in which Q is OZ, or (b) reacting a compound of Formula III with a compound of formula ZX, in which X is Cl, Br or I, to produce a compound (I) in which Q is SZ.
Patent GB-654811-A (GB)
Title: Improvements relating to bracing
IPC: E04C3/02
Filed: 1948-11-25
Abstract: 654,811. Struts for building structures. EVANS, O. (Smith, J. M.). Nov. 25, 1948, No. 30632. [Class 20(ii)] An adjustable bracing, for e.g. floor joists or wall studs, comprises a brace arm 4 consisting of a pair of flat apertured securing portions 6 for engaging the top and bottom surfaces of a pair of spaced beams 1, an intermediate flat web portion at rightangles to the securing portions and a pair of twisted portions 7 connecting the securing portions and the web portion. As shown in Fig. 1, the arms 4 are used in pairs pivoted together at 5. The securing portions 6 have staggered apertures 8 in them for the passage of nails, screws, &c. The joists carry rough planking 2 and finished flooring 3.
Patent GB-1531317-A (GB)
Title: Method for the manufacture of permanent magnets
IPC: H01F41/02
Filed: 1976-07-22
Abstract: 1531317 Permanent magnets; magnetization BBC BROWN BOVERI & CO Ltd 22 July 1976 [24 July 1975] 30672/76 Heading H1P A permanent magnet is manufactured from a mixture of a powdered magnetizable substance of high magnetic crystal anisotropy with a binding medium and charging the mixture into a press comprising a mould cylinder 2 and pneumatically operated dies 1, 3. Die 1 is constructed as an ultrasonic resonator excited from generator 6 and the cylinder 2 is surrounded by magnetizing coil 7. The mixture is precompressed by die 1 with magnetization and the resultant tablet is raised to the upper edge of the mould by die 3; after which it is compressed under die 1 with application of magnetization and of ultrasonic vibrations to produce local heating by absorption of oscillatory energy. After cooling the magnet is removed from the mould by actuating die 3. The magnetizable substance may be a cobalt rare earth or alnico alloy, and the binding medium may be thermoplastic or thermosetting. In the case of the former the mould is held below the softening temperature and in the case of the latter it is held above the setting temperature. The medium may be, e.g., polyphenyl sulphide, polyamide, polyethylene, polyester or low melting point metals e.g. tin or Wood metal. The magnetic powder may be tin-coated to assist in binding.
Patent GB-896974-A (GB)
Title: Improvements relating to apparatus for the degasification of steel
IPC: C21C7/10
Filed: 1959-09-09
Abstract: 896,974. Degassing metals. DORTMUNDHORDER HUTTENUNION A.G. Sept. 9, 1959 [Sept. 11, 1958], No. 30808/59. Class 72. Apparatus for the degassing of steel melts comprises a vacuum vessel, a ladle containing the melt to be treated, and a pipe extending from the bottom of the vessel into the melt, the vacuum vessel being mounted so that it can swing about a horizontal axis whereby the melt may be caused to flow between the vacuum vessel and the ladle. The vacuum vessel may also pivot about an axis remote from the centre of the vessel so that the vessel may be moved sideways and vertically. As shown, vessel 11 is supported on lever 15 pivoted at 17 and can be moved up and down by a hydraulic jack acting between points 21 and 22. The vessel is kept vertical by link 16 pivoted at 14 and 18. In an alternative embodiment (Fig. 2 not shown) link 16 is replaced by an hydraulic jack which allows the vessel to be tilted so that part of the floor of the vessel remote from inlet 12 may be lower than the top of the inlet, thus allowing the premelting of alloying additions in the tilted vessel or enabling a greater filling of the vessel to occur when it is in the lowered position than is possible when it is maintained level. The vessel may be elongated in the direction of its supporting levers (Fig. 3 not shown) and it may be rigidly fixed to a single lever pivoted below and to the side of the vessel (Fig. 4 not shown) so that rotation of the vessel about this pivot raises it and moves it to the side clear of the ladle 10.